Hi Mel,
If you zoom in on the image, a fifth engine can be seen on the nose with its prop neatly parked horizontally like the other four, so I'm sure you're correct and it is an
Tupolev ANT-14 Pravda 
Edited to say: Just noticed a comment added by b1lank to original post
"Just noticed what looks like a prop on the nose of the aircraft?"
A thought on the Trimotor at right, while agreeing that an ANT-9 is a likely candidate, didn't they all have two-bladed props? This one clearly has three-bladed, so how about a PZL.4 which had them as standard and also fits in the time-frame!